Burglar-alarm.



W. G. SPIEGEL.

BURGLAR ALARM. APPLICATION FILED MAR.31,1910.

Patented June 18, 1912.

COLUMBIA PLANOGRAPH co WASHINGTON, D. C.

WILLIAM GEORGE SPIEG-EL, OF

NEW YORK, N. Y., ASSIGNOR TO FRED OPI ENHEIMER,

OF NEW YORK, N. Y.

BURGLAR-ALARM.

Specification of Letters Patent.

Patented June 18, 1912.

Application filed March 31, 1910. Serial No. 552,656.

To all whom it may concern:

Be 1t known that I, WILLIAM G. SPIEGEL, a citizen of the United States,residing at New York city, in the county of New York and State of NewYork, have invented certain new and useful Improvements inBurglar-Alarms, of which the following is a specification.

The present invention relates to burglar alarms, and the object is toprovide a simple compact device of this character that can be readilycarried in the pocket, and can be mounted in operative position upon anysupporting surface, such as a door or frame without the necessity ofemploying screws or other fastening devices that would mar the woodwork.

A further and important object is to provide alarm mechanism, in theform of cartridge-exploding means, and to employ in connection therewitha receiver for the cartridge wads, sparks and products of combustion soas to eifectively prevent any danger of the same igniting adjacentarticles.

The preferred form of construction is illustrated in the accompanyingdrawings, wherein Figure 1 is a view partially in elevation, andpartially in section of the alarm. Fig. 2 is a detail longitudinalsectional view through the base, illustrating one manner of mounting thevacuum holder thereon. Fig. 3 is a sectional view through another formof construction. Fig. 4: is a plan view of the vacuum holding deviceillustrated in Fig. 3.

Similar reference numerals designate corresponding parts in all thefigures of the drawings.

In the embodiment illustrated, a base is employed having an opening 6therethrough. In this opening is fitted a vacuum holding de vice in theform of a rubber or other elastic cup 7 having an open side disposed onone side of the base and having a central projection or knob 8 arrangedon the opposite side. This cup may be mounted in various ways. Thus inFig. 2, said knob is provided with an annular flange 9 having aperipheral groove 10 therein that receives the edge walls of the opening6. In Figs. 3 and 1, the cup, which is designated 7 has an annularflange 9* provided with a plurality of projections 1O that are forcedinto sockets in the base.

Secured to the lower margin of the base,

is an open ended barrel 11, one end of which is designed to receive acartridge 12, while detachably fitted on the other end is a sleeve 13preferably of rubber or other elastic ma terial. Secured to this sleevein any suitable manner is a receiving receptacle or bag 14.- preferablyof fire-proof material. A hammer 15 is pivoted as shown at 16 upon theupper portion of the base, and is provided with a projection 17 thatwill strike the cartridge 12 to explode the same. A spring 18, connectedto said hammer and surrounding the pivot 16, constitutes means forswinging said hammer against the cartridge. This hammer furthermore hasan actuating knob 19 and a projection 20, the latter of which isarranged to engage a door jamb J to hold the hammer against move ment.

In using the device, the base is placed upon a supporting surface (as adoor D) at the desired point, and the cup is compressed 'to produce apartial vacuum therein, so

that the air pressure will maintain the base in place. A cartridgehaving been introduced into one end of the barrel, the bag is fittedupon the other end, and the hammer is then moved against the action ofthe spring until the projection 20 is engaged with the door amb J. Theparts will thereupon be in the position shown in Fig. 1, and will retainthis position until the door is opened, whereupon the hammer beingreleased, will swing around, and the projection 7 will strike thecartridge, exploding the same. The contents of said cartridge will ofcourse be delivered through the barrel 11 into the bag 14., and theforce of the explosion may detach said bag from the barrel. In anyevent, however, the products of combustion will be received in said bagor other receptacle, and consequently do no in-' jury nor can theyignite any adjacent articles of inflammable material.

From the foregoing, it is thought that the construction, operation andmany advantages of the herein described invention will be apparent tothose skilled in the art, without further description, and it will beunderstood that various changes in the size, shape, proportion and minordetails of construction may be resorted to without departing from thespirit or sacrificing any of the advantages of the invention.

Having thus fully described my invention, hammer pivoted to said baseand arranged what I claim as new, and desire to secure by to have amovement over that end of the Letters Patent, is barrel which holds thecartridge.

A burglar alarm comprising a base hav- In testimony whereof I hereuntoaflix my 5 ing supporting means for engagement with signature in thepresence of two witnesses. 15

a fiat surface at any point, an open-ended WILLIAM GEORGE SPIEGEL barrelcarried by said base and arranged to receive a cartridge in one end, acombustion Witnesses:

and flame-smothering bag fitted to the other S. B. GooDALE, 10 end ofsaid barrel, and a spring actuated J. WV. SMITH.

Copies of this patent may be ehtained for five cents each, by addressingthe Commissioner of I'aizen Washington, D. G.

